US

The White House underwent massive renovations in the '40s and '50s -- here's what it looked like before and after

In 1947, President Harry Truman noticed the White House was hardly structurally sound, and once he won the 1948 presidential election, he commissioned a group of engineers to tackle the issue.

What followed was a massive, four-year-long gut renovation of the Executive Mansion — the results of which make up much of the White House we know today.

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